ˈemˈwən noun
or m-1 rifle
( plural m-1's or m-1 rifles )
Usage: usually capitalized M
: a gas-operated semiautomatic .30 caliber rifle fed from a magazine containing a clip of eight rounds, mechanically capable of firing 16 to 32 rounds a minute, having an effective range of 500 yards, and weighing 9 1/2 pounds — called also Garand rifle